TL; DR in Spoiler - Spoiler level up with base int. put desired number of AP into MP. You will gain (base int/10 rounded DOWN) extra MP for each point you add Use an AP reset to remove the AP from MP and put it wherever you want (you must have put at least 1 point in HP previously) Carry on washing as normal, you now have more washes. It has been thought for a long time that double washing was not functional in maple royals. Due to recent discoveries in a bug report thread (http://mapleroyals.com/forum/threads/hp-washing-bug-cant-remove-mp.17991/) and investigated in a split thread (http://mapleroyals.com/forum/threads/hp-washing-double-washing.18157/) we now know that this in not the case. Background - what is HP washing?: HP washing is a technique used to create extra HP on a character, to enable certain classes to better survive at different bosses. This is possible because on level ups, characters gain extra MP depending on how much INT they have, and because HP and MP share a common "pool" of AP - so when a point is put into one of these, it can later be removed from either of them*. *there is a bug in royals, where if points have been put into MP, sometimes a number above a characters actual "minimum MP" will function as if it were really minimum MP, and you will be unable to remove AP from MP. This can be solved by adding one AP into HP, THEN resetting the points from MP. How to HP wash: There is already a guide on "how to HP wash" that can be found at http://mapleroyals.com/forum/threads/fully-revised-hp-washing-guide.8286/ which covers the process in more detail than I care to do at this time. The process in general, involves obtaining extra MP over your "minimum MP" (which is determined by your class) by some method, then adding AP points to HP, and taking those points out of MP. Obtaining extra MP requires you to have INT, which can be done by two methods - equips, or base. These are equivalent when it comes to extra MP gained from level up - every 10 TOTAL int will provide 1 extra MP on a level up. Where does MP washing fit in? It has recently come to light, that a "fresh AP" (that is, a point added from a level up, not a point reset from another stat using an AP reset) will provide some number of base MP determined by your class, but additionally will yield (BASE INT/10) additional MP. Using a reset to take a point out of MP only removes the base number, leaving us with a profit of (BASE INT/10) MP. This is simply another way to get extra MP to enable us to do more washes. For example: A Thief will naturally gain 10-12 MP per point placed into MP and will lose 12 mp per point reset. A Thief with 120 BASE INT will gain 22-24 MP per point placed into MP and will lose 12 mp per point reset. A Thief with 120 INT from equips will gain 10-12 MP per point placed into MP and will lose 12 mp per point reset. A Warrior will naturally gain 2-4 MP per Point placed into MP and will lose 4 MP per point reset. A Warrior with 100 BASE INT will gain 12-14 MP per point placed into MP an will lose 4 MP per point reset. A Warrior with 100 INT from equips will gain 2-4 MP per Point placed into MP and will lose 4 MP per point reset. So what is the MP washing Process? Level up with some number (multiple of 10 - it rounds DOWN) of Base int Put any number of your level up AP into MP. You will gain (class base) + (base int/10) MP for this. Use an AP reset to take that point out of MP and put it anywhere you like. You will lose (class washing cost) MP for this.* *See note/thread at top of post about MP removal bug. You have now generated extra MP. The process up to this point is called "MP washing" and can be used by mages that wish to hit max MP to better tank things with magic guard. Other classes can now use this bonus MP to perform additional HP washes - this is called "Double Washing" because you have performed both an MP wash, and then used that bonus MP to perform an HP wash. So what does this all mean? For the average player, this means very little. This method of washing costs an extra 45m per level at current prices, requires you to have a large amount of base int (which will later need to be reset, costing $$$$) to be effective, and is not necessary to survive any bosses at a level that is reasonable to kill them. This is not even necessary to wash to high numbers like 8, 10, or even 13k. What this will allow, if that players using base int to wash only need to keep that int for a fraction of the time they previously would have. What this also means is that theoretically an incredibly rich warrior could see themselves at 30k HP as low as level 50, and that 30K HP ranged characters are now a possibility. This also means that Base INT is a much more efficient washing method than previously thought, as MP washing for one level with only 60 base int will provide more extra MP than five levels with Billions of mesos worth of INT equips. And that's it! I may later expand this into a full HP/MP/Double washing guide, but until now, Pheelo's will fit that purpose just fine.